Darwin Wigget’s 7D Review… the counterpointPro Photo Home has posted a retort to the claims made by Darwin Wigget and his review of the 7D.

Pro Photo Home seems to be doing tests at f/5.6 & f/16. I think the issue with the 7D was in the f/8 to f/11 area. Most seem to be saying that diffraction sets in with larger apertures on the 7D compared to the XSi.